Pick by use case
Solo freelancer billing clients
Toggl Track free tier. Start/stop timer, project tags, weekly reports. Done in 10 minutes of setup.
Agency tracking utilisation per client
Harvest. Solid invoicing integration, decent budget tracking, mature for agency workflows.
In-house team that just needs hours logged
ClickUp Time Tracking (included in the workspace) or Notion + a manual table. No new tool to introduce.
Recommended in this article
ClickUp
What to avoid
Tools with screenshot surveillance features. Even if you have a use case, the morale and trust cost is rarely worth it. Track hours, not keystrokes.